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Media Type
3,354
texts
30
movies
15
audio
1
images
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3,400
Always Available
Topics & Subjects
2,942
NASA Technical Reports Server (NTRS)
1,322
TELESCOPES
654
SPACEBORNE TELESCOPES
499
X RAY TELESCOPES
401
MIRRORS
318
IMAGING TECHNIQUES
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Collection
2,942
NASA Network Resource and Training Site
242
NASA Technical Documents
61
Defense Technical Information Archive
31
American Libraries
19
Folkscanomy: A Library of Books
12
Community Audio
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Creator
2,942
nasa technical reports server (ntrs)
61
defense technical information center
21
non
4
bell, louis, 1864-1923
4
kitchiner, william, 1775?-1827
3
cooke, t., and sons, york
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Language
3,349
English
4
Latin
3
French
1
German
1
Italian
1
Japanese
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